👉 Thyroxine, also known as T4 or 3-iodothyronine, is a hormone produced by the thyroid gland. It plays a crucial role in regulating various physiological processes such as metabolism, growth and development, and energy production. The term "thyroxinate" refers to the presence of thyroxine in the body, which is a naturally occurring substance that is synthesized primarily from iodine. Thyroxine is also present in excess or in deficiency conditions, but it's